Modelling of cutting tool - Soil interaction - Part II: Macromechanical model and upscaling

A. Nardin, B. A. Schrefler

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

In the foregoing paper we have proposed a strategy for soil modelling based on the discrete approach. By considering the soil as an assembly of rigid disks we have developed a local model. The model concentrates at the contact level between the disks the real mechanical behaviour of the soil. For this purpose suitable contact models have been developed, where specific elasto-plastic laws have been implemented in the node-to-segment contact formulation. In this second part after investigating the mechanical behaviour of the local model we reproduce, with an assembly of disks (global model), the real behaviour of stiff soils and rocks under standard loading paths. The change of scale from the local to global level is carried out through dimensional analysis. The behaviour of different soils is simulated by regular and irregular monodisperse packings of disks and compared with real laboratory tests.

Original languageEnglish (US)
Pages (from-to)343-359
Number of pages17
JournalComputational Mechanics
Volume36
Issue number5
DOIs
StatePublished - Jan 1 2005

Keywords

  • Change of scale
  • Contact mechanics
  • Dimensional analysis
  • Elasto-plastic local model
  • Elasto-plastic macromechanical model
  • Granular media
  • Rock

ASJC Scopus subject areas

  • Mechanics of Materials
  • Computational Mechanics
  • Applied Mathematics
  • Safety, Risk, Reliability and Quality

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